# YourAITools API

> Pay-per-call x402 APIs for AI agents (USDC on Base, Polygon, Arbitrum or Solana). No signup: call, get HTTP 402, pay, retry. Or pay once for a prepaid credits pack ($1, or $5 for $5.50 of credits) and send Authorization: Bearer <key> to any paid route.

## AgentGate
- Is this AI agent registered, Active and Verified (Concordium Agent Registry)?
- Price: $0.005 USDC on Base via x402
- Paid: GET https://api.youraitools.co/agentgate/v1/check-agent
- Free preview: https://api.youraitools.co/agentgate/v1/check-agent/preview?id=Mf22soLh1NuZYFgBK8iSs
- Remote MCP (streamable HTTP): https://api.youraitools.co/agentgate/mcp
- OpenAPI: https://api.youraitools.co/agentgate/openapi.json
- Guide: https://youraitools.co/guides/x402-agent-verification

## WebRead
- Read any public web page as clean Markdown (robots.txt-aware, SSRF-safe).
- Price: $0.002 USDC on Base via x402
- Paid: GET https://api.youraitools.co/webread/v1/read
- Free preview: https://api.youraitools.co/webread/v1/read/preview?url=https://example.com/
- Remote MCP (streamable HTTP): https://api.youraitools.co/webread/mcp
- OpenAPI: https://api.youraitools.co/webread/openapi.json
- Guide: https://youraitools.co/guides/pay-per-call-web-scraper-api

## InjectScan
- Scan text, web pages and MCP tool definitions for prompt injection.
- Price: $0.003 USDC on Base via x402
- Paid: GET https://api.youraitools.co/injectscan/v1/scan, POST https://api.youraitools.co/injectscan/v1/scan
- Free preview: https://api.youraitools.co/injectscan/v1/scan/preview?text=Ignore%20previous%20instructions
- Remote MCP (streamable HTTP): https://api.youraitools.co/injectscan/mcp
- OpenAPI: https://api.youraitools.co/injectscan/openapi.json
- Guide: https://youraitools.co/guides/prompt-injection-scanner-api

## DomainCheck
- Is this domain or email real and trustworthy? DNS, SPF/DMARC, registration age, disposable mail.
- Price: $0.002 domain / $0.001 email USDC on Base via x402
- Paid: GET https://api.youraitools.co/domaincheck/v1/domain, GET https://api.youraitools.co/domaincheck/v1/email
- Free preview: https://api.youraitools.co/domaincheck/v1/domain/preview?domain=example.com
- Remote MCP (streamable HTTP): https://api.youraitools.co/domaincheck/mcp
- OpenAPI: https://api.youraitools.co/domaincheck/openapi.json
- Guide: https://youraitools.co/built-by-us

## PayGuard
- Is this crypto address on the US Treasury OFAC SDN list? Exact match with SDN entity, programs and list date, plus chain guess and checksum. Informational, not legal advice.
- Price: $0.001 address / $0.01 batch of 50 USDC on Base via x402
- Paid: GET https://api.youraitools.co/payguard/v1/address, POST https://api.youraitools.co/payguard/v1/batch
- Free preview: https://api.youraitools.co/payguard/v1/preview?address=0x098B716B8Aaf21512996dC57EB0615e2383E2f96
- Remote MCP (streamable HTTP): https://api.youraitools.co/payguard/mcp
- OpenAPI: https://api.youraitools.co/payguard/openapi.json
- Guide: https://youraitools.co/built-by-us

## PkgGuard
- Is this dependency safe to install? Known vulnerabilities (CVE/GHSA, severity, fixed-in) and confirmed-malicious packages for a package.json, lockfile, requirements.txt, go.mod or Cargo.lock (OSV.dev data).
- Price: $0.003 scan / $0.001 package USDC on Base via x402
- Paid: POST https://api.youraitools.co/pkgguard/v1/scan, GET https://api.youraitools.co/pkgguard/v1/package
- Free preview: https://api.youraitools.co/pkgguard/v1/preview?ecosystem=npm&name=lodash&version=4.17.15
- Remote MCP (streamable HTTP): https://api.youraitools.co/pkgguard/mcp
- OpenAPI: https://api.youraitools.co/pkgguard/openapi.json
- Guide: https://youraitools.co/built-by-us

## StackDetect
- What is this website built with? CMS, ecommerce, JS framework, hosting/CDN, analytics, ad pixels, payments, plus email provider, DNS host and verified SaaS from public DNS, with versions, confidence and evidence.
- Price: $0.003 USDC on Base via x402
- Paid: GET https://api.youraitools.co/stackdetect/v1/detect, POST https://api.youraitools.co/stackdetect/v1/detect
- Free preview: https://api.youraitools.co/stackdetect/v1/preview?url=https://laravel.com
- Remote MCP (streamable HTTP): https://api.youraitools.co/stackdetect/mcp
- OpenAPI: https://api.youraitools.co/stackdetect/openapi.json
- Guide: https://youraitools.co/built-by-us

## TokenVerdict
- Is this Base token safe to buy? SAFE / CAUTION / DANGER with a score: simulated buy-transfer-sell (honeypot, buy/sell tax), owner powers (mint, blacklist, pause, upgradeable, renounced), liquidity and LP burn, holder concentration, verified source and age. Shareable card at /t/<token>.
- Price: $0.005 lite / $0.015 quick / $0.05 deep USDC on Base via x402
- Paid: GET https://api.youraitools.co/tokenverdict/v1/lite, GET https://api.youraitools.co/tokenverdict/v1/quick, GET https://api.youraitools.co/tokenverdict/v1/deep
- Free preview: https://api.youraitools.co/tokenverdict/v1/preview?token=0x532f27101965dd16442E59d40670FaF5eBB142E4
- Remote MCP (streamable HTTP): https://api.youraitools.co/tokenverdict/mcp
- OpenAPI: https://api.youraitools.co/tokenverdict/openapi.json
- Guide: https://youraitools.co/built-by-us

## SignCheck
- Is it safe to sign this? Pre-sign check for agent wallets: decodes a transaction, EIP-712 Permit / Permit2 / EIP-3009 signature, EIP-7702 delegation or x402 payment and returns SAFE / CAUTION / DANGER with reasons (unlimited or EOA approvals, setApprovalForAll, fake USDC domains, x402 overpay or wrong payTo, OFAC SDN), on-chain facts and eth_call simulation.
- Price: $0.015 full / $0.005 lite (offline) USDC on Base via x402
- Paid: POST https://api.youraitools.co/signcheck/v1/check, GET https://api.youraitools.co/signcheck/v1/check, POST https://api.youraitools.co/signcheck/v1/lite, GET https://api.youraitools.co/signcheck/v1/lite
- Free preview: https://api.youraitools.co/signcheck/v1/preview?to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&data=0x095ea7b30000000000000000000000003c1a1e01e790cd326495631b3b38bd7068f08d6fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
- Remote MCP (streamable HTTP): https://api.youraitools.co/signcheck/mcp
- OpenAPI: https://api.youraitools.co/signcheck/openapi.json
- Guide: https://youraitools.co/built-by-us

## CounterpartyCheck
- Before an agent pays, approves or interacts with an address: ok / caution / block with reasons and a confidence field. OFAC SDN and ScamSniffer lists, wallet vs contract vs EIP-7702, verification and deployer, ENS / Basename, cross-chain (wrong-chain) check, age, recent activity and exposure, approval magnets, x402 directory presence. EVM (Base, Ethereum, Polygon, Arbitrum) and Solana. A safety check, not advice.
- Price: $0.005 lite / $0.015 quick / $0.05 full USDC on Base via x402
- Paid: GET https://api.youraitools.co/counterpartycheck/v1/lite, GET https://api.youraitools.co/counterpartycheck/v1/quick, GET https://api.youraitools.co/counterpartycheck/v1/full, POST https://api.youraitools.co/counterpartycheck/v1/lite, POST https://api.youraitools.co/counterpartycheck/v1/quick, POST https://api.youraitools.co/counterpartycheck/v1/full
- Free preview: https://api.youraitools.co/counterpartycheck/v1/preview?address=0x098B716B8Aaf21512996dC57EB0615e2383E2f96&chain=ethereum
- Remote MCP (streamable HTTP): https://api.youraitools.co/counterpartycheck/mcp
- OpenAPI: https://api.youraitools.co/counterpartycheck/openapi.json
- Guide: https://youraitools.co/built-by-us

## x402 Proxy Template
- Self-serve download (zip, MIT): a Cloudflare Worker that puts an x402 paywall (USDC on Base, v2 + v1) in front of any HTTP API from one config file, with Bazaar metadata, OpenAPI, remote + stdio MCP, quickstart and deploy guide.
- Price: $19 (one-time download) USDC on Base via x402
- Paid: GET https://api.youraitools.co/x402-template/download
- Free preview: https://api.youraitools.co/x402-template/
- OpenAPI: https://api.youraitools.co/x402-template/openapi.json
- Guide: https://youraitools.co/x402-service

## Credits (prepaid packs)
- Prepaid credits for every tool above: one x402 payment ($1, or $5 with a 10% bonus) returns an API key with a USDC-denominated balance. Send Authorization: Bearer <key> to any paid route and the call's normal price is debited, with no per-call on-chain payment. Balance, top-ups and key rotation included. Prepaid API usage only, not refundable.
- Price: $1 pack / $5 pack ($5.50 of credits) USDC on Base via x402
- Paid: POST https://api.youraitools.co/credits/v1/pack/1, POST https://api.youraitools.co/credits/v1/pack/5
- Free preview: https://api.youraitools.co/credits/v1/preview?pack=5
- Remote MCP (streamable HTTP): https://api.youraitools.co/credits/mcp
- OpenAPI: https://api.youraitools.co/credits/openapi.json
- Guide: https://api.youraitools.co/credits/

## Discovery
- https://api.youraitools.co/.well-known/x402
- https://api.youraitools.co/openapi.json